IEC 62465:2010

IEC 62465 ®
Edition 1.0 2010-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Nuclear power plants –
Instrumentation and control important to safety – Management of ageing of
electrical cabling systems
Centrales nucléaires de puissance –
Instrumentation et contrôle-commande importants pour la sûreté – Gestion du
vieillissement des systèmes de câbles électriques

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IEC 62465 ®
Edition 1.0 2010-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Nuclear power plants –
Instrumentation and control important to safety – Management of ageing of
electrical cabling systems
Centrales nucléaires de puissance –
Instrumentation et contrôle-commande importants pour la sûreté – Gestion du
vieillissement des systèmes de câbles électriques

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
V
CODE PRIX
ICS 27.120.20 ISBN 978-2-88910-915-9
– 2 – 62465 © IEC:2010
CONTENTS
FOREWORD.4
INTRODUCTION.6
1 Scope.8
2 Normative references .8
3 Terms and definitions .8
4 Technical background.11
4.1 General .11
4.2 Cable types .11
4.3 Reasons for cable ageing management .12
4.4 Cable stressors .12
4.5 Cable testing techniques .13
5 Cable testing requirements.13
5.1 General .13
5.2 Test methods .14
5.3 Application of cable testing requirements .14
5.4 Test interval .14
5.5 Test location .14
5.6 Calibration of cable testing equipment.14
5.7 Test results .14
5.8 Validation of test methods .14
5.9 Software and test tool validation.15
5.10 Qualification of test personnel .15
6 Acceptable means for cable testing .15
7 Testing of end devices.15
8 Relationship between initial qualification and cable ageing management .16
9 Example of a nuclear power plant practice for cable ageing management.16
10 Cable testing for long-term operation.16
Annex A (informative) Typical components of an electrical cable .17
Annex B (informative) Cable testing techniques .20
Annex C (informative) Description of TDR test .22
Annex D (informative) Electrical measurement of NIS cables and detectors .26
Annex E (informative) Example of a nuclear power plant practice for cable ageing
management.28
Bibliography.31

Figure A.1 – Example of cables covered by this International Standard.18
Figure C.1 – Principle of TDR test of an open cable.22
Figure C.2 – Principle of TDR test of a short cable.23
Figure C.3 – Simplified TDR traces for a cable with a passive load .23
Figure C.4 – TDR test setup .24
Figure C.5 – RTD cabling and corresponding TDR signature .25
Figure D.1 – I-V curve.27

62465 © IEC:2010 – 3 –
Figure E.1 – Photo of baskets in which samples of 1E cables are deposited and placed
in the plant for periodic removal and testing.29
Figure E.2 – Schematic of test interval for mechanical tests.30

Table 1 – Examples of stressors with potential to damage cables .13

– 4 – 62465 © IEC:2010
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
NUCLEAR POWER PLANTS –
INSTRUMENTATION AND CONTROL IMPORTANT TO SAFETY –
MANAGEMENT OF AGEING OF ELECTRICAL CABLING SYSTEMS

FOREWORD
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International Standard IEC 62465 has been prepared by subcommittee 45A: Instrumentation
and control of nuclear facilities, of IEC technical committee 45: Nuclear instrumentation.
The text of this International Standard is based on the following documents:
FDIS Report on voting
45A/79
...